Metal zipper tape: As the raw material of metal zipper tape polyester polyester thread, suture, the core line of different types of silk composition, its weight, coloring are different, so in the same zipper prone to color, At this point in the selection of cloth to choose when dyeing evenly, there is no cloudy point, different fabrics are made of soft cloth with the main soft.
Mouth: the metal zipper teeth are plated electroplating color, so the purchase must pay attention to its surface color is evenly plated, there is no color flowers phenomenon, when pulling up and down the zipper is smooth. Zipper in the pull, you must observe whether the left and right teeth are bite each other, asymmetric zipper teeth will certainly affect the use of zipper.
Metal zipper pull head: metal zipper pull head shape more, the finished product can be small and meticulous, you can also be bold and majestic. But no matter what kind of pull head, have to feel the pull of the first pull is comfortable, will not pull the zipper or not close together the phenomenon. Now available in the market are equipped with self-locking slider device, so after the zipper pull, you have to test the next lock after the zipper will slide down. Limit code: the upper and lower must be tightly clamped microphone or clamp on the microphone teeth, must ensure that its strong and perfect.